物理演示实验参考资料

• 机 构: 南京市师范专科学校数理科,
• 出 处: 江苏教育
• 发表日期: 2004年期
• 关键词: 单缝衍射 物理演示实验 衍射条纹 发光强度 参考资料 圆孔衍射 菲涅耳 林孔 陈习 子边

单缝衍射演示实验一般做单缝衍射实验时,大多采用灯光作光源,这时所得到的衍射条纹,往往不很明亮,如果把这些条纹投射到光屏上,学生不容易清楚地观察到。因此,做这个实验时只能在狭缝后直接观察,不能使全班学生同时看到,造成讲解时的不便。要想在光屏上能够清楚地看到单缝衍射的条纹,主要关键在于加强光源的发光强度。采用日光作光源,可以解决这个问题。这个演示

Single-slit diffraction demonstration experiment Generally single-slit diffraction experiments, the use of light as a light source, the diffraction fringes obtained at this time are often not very bright, if these stripes projected onto the screen, the students can not be clearly observed. Therefore, this experiment can only be observed directly after the slit, can not make the class students see at the same time, resulting in inconvenience to explain. To be able to clearly see the single-slit diffraction stripes on the screen, the key is to strengthen the luminous intensity of the light source. The use of daylight as a light source can solve this problem. This demo